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23-03-2018 17:25

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Good evening, Colleted on corticated twigs of Pla

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unknown asco
Edit Szilvásy, 11-09-2017 08:19
Edit SzilvásyGood morning,
My girlfriend has sent this mushroom, unfortunately wasn't fresh. I refreshed it, but I could only observe spores. Mushroom is embedded in Ceriporia sp. It ressambles Catinella sp., but it was blackhish. 
Spore  size: 10.72-11.08 x 4.06-4.7 µm, smooth with 2 drops oil. Ascus lenght: +-77 µm
Could anyone help with the solution.
Thanks in advance: Edit

  • message #50344
  • message #50344
  • message #50344
  • message #50344
Lothar Krieglsteiner, 11-09-2017 09:02
Lothar Krieglsteiner
Re : unknown asco

Hello Edit,

yes - why not old Catinella olivacea?

I think there is only one species in the genus (?). It is normal that the green colour can only be seen in +- fresh specimens.

Best regards from Lothar

Edit Szilvásy, 11-09-2017 09:26
Edit Szilvásy
Re : unknown asco
Hello Lothar,

I think no, there are 3 species in IndexFungorum, C. olivace, C. melanochlora,C. nigro-olivacea. Photos are only C.olivacea on Net.
I read on Net C. nigro-olivacea:
".....spores eight,uniseriate; elliptic or elliptic-clavate, usually slightly narrowed
near the middle so as to appear slipper-shaped, continuous, two-
guttulate, pale olive-brown to deep brown, 7-I I x 4-5 ,u (majority
8-io ,u);...."

I think this mushroom maybe C. nigro-olivacea, but am'not sure.
The photo is still made of fresh mushrooms.

Thank your for answer.
Hans-Otto Baral, 11-09-2017 11:05
Hans-Otto Baral
Re : unknown asco
Hi Edit

Durand distinguishes two species, and you are right, it fits the first of the two. But In the long synonymy list he included Catinella olivacea as a possible synonym. This means that he was not sure whether Batsch had the same fungus as L. v. S. (or Currey who appears to have validated it). 

Apparently later authors accepted that Batsch dealt with the same fungus and adopted the oldest name olivacea.
Edit Szilvásy, 11-09-2017 11:24
Edit Szilvásy
Re : unknown asco
Dear Zotto,

Thank you very much for the explanation.
I became even smarter today :-))
Best regards from Edit